使用 php 将数据分解为页面 [关闭]

Question

我想将一个数据表拆分为多个页面，以便在搜索记录时不必向下滚动太多。

到目前为止，我的研究发现了一些方法，但所有这些方法都包含大约 100 多行编码/脚本。

现在我想说我不是 LAZY，但我确实想知道这是否真的有必要，或者是否有更短更简单的方法。 假设我可以编写一个 Where 子句 + IF 语句，并且在获取或发布少于 100 行脚本的数据中可能不包含其他内容，我不禁认为拥有这么长的脚本是不对的只是为了将页面添加到数据表中..

有人知道/一些好的链接或简单的脚本吗？还是这个 rly 需要那么多脚本？ 干杯！

Answer 1

找到了解决办法..

 <?php  

    class Paginator{  
        var $items_per_page;  
        var $items_total;  
        var $current_page;  
        var $num_pages;  
        var $mid_range;  
        var $low;  
        var $high;  
        var $limit;  
        var $return;  
        var $default_ipp = 25;  

        function Paginator()  
        {  
            $this->current_page = 1;  
            $this->mid_range = 7;  
            $this->items_per_page = (!empty($_GET['ipp'])) ? $_GET['ipp']:$this->default_ipp;  
        }  

        function paginate()  
        {  
            if($_GET['ipp'] == 'All')  
            {  
                $this->num_pages = ceil($this->items_total/$this->default_ipp);  
                $this->items_per_page = $this->default_ipp;  
            }  
            else  
            {  
                if(!is_numeric($this->items_per_page) OR $this->items_per_page <= 0) $this->items_per_page = $this->default_ipp;  
                $this->num_pages = ceil($this->items_total/$this->items_per_page);  
            }  
            $this->current_page = (int) $_GET['page']; // must be numeric > 0  
            if($this->current_page < 1 Or !is_numeric($this->current_page)) $this->current_page = 1;  
            if($this->current_page > $this->num_pages) $this->current_page = $this->num_pages;  
            $prev_page = $this->current_page-1;  
            $next_page = $this->current_page+1;  

            if($this->num_pages > 10)  
            {  
                $this->return = ($this->current_page != 1 And $this->items_total >= 10) ? "<a class=\"paginate\" href=\"$_SERVER[PHP_SELF]?page=$prev_page&ipp=$this->items_per_page\">« Previous</a> ":"<span class=\"inactive\" href=\"#\">« Previous</span> ";  

                $this->start_range = $this->current_page - floor($this->mid_range/2);  
                $this->end_range = $this->current_page + floor($this->mid_range/2);  

                if($this->start_range <= 0)  
                {  
                    $this->end_range += abs($this->start_range)+1;  
                    $this->start_range = 1;  
                }  
                if($this->end_range > $this->num_pages)  
                {  
                    $this->start_range -= $this->end_range-$this->num_pages;  
                    $this->end_range = $this->num_pages;  
                }  
                $this->range = range($this->start_range,$this->end_range);  

                for($i=1;$i<=$this->num_pages;$i++)  
                {  
                    if($this->range[0] > 2 And $i == $this->range[0]) $this->return .= " ... ";  
                    // loop through all pages. if first, last, or in range, display  
                    if($i==1 Or $i==$this->num_pages Or in_array($i,$this->range))  
                    {  
                        $this->return .= ($i == $this->current_page And $_GET['page'] != 'All') ? "<a title=\"Go to page $i of $this->num_pages\" class=\"current\" href=\"#\">$i</a> ":"<a class=\"paginate\" title=\"Go to page $i of $this->num_pages\" href=\"$_SERVER[PHP_SELF]?page=$i&ipp=$this->items_per_page\">$i</a> ";  
                    }  
                    if($this->range[$this->mid_range-1] < $this->num_pages-1 And $i == $this->range[$this->mid_range-1]) $this->return .= " ... ";  
                }  
                $this->return .= (($this->current_page != $this->num_pages And $this->items_total >= 10) And ($_GET['page'] != 'All')) ? "<a class=\"paginate\" href=\"$_SERVER[PHP_SELF]?page=$next_page&ipp=$this->items_per_page\">Next »</a>\n":"<span class=\"inactive\" href=\"#\">» Next</span>\n";  
                $this->return .= ($_GET['page'] == 'All') ? "<a class=\"current\" style=\"margin-left:10px\" href=\"#\">All</a> \n":"<a class=\"paginate\" style=\"margin-left:10px\" href=\"$_SERVER[PHP_SELF]?page=1&ipp=All\">All</a> \n";  
            }  
            else  
            {  
                for($i=1;$i<=$this->num_pages;$i++)  
                {  
                    $this->return .= ($i == $this->current_page) ? "<a class=\"current\" href=\"#\">$i</a> ":"<a class=\"paginate\" href=\"$_SERVER[PHP_SELF]?page=$i&ipp=$this->items_per_page\">$i</a> ";  
                }  
                $this->return .= "<a class=\"paginate\" href=\"$_SERVER[PHP_SELF]?page=1&ipp=All\">All</a> \n";  
            }  
            $this->low = ($this->current_page-1) * $this->items_per_page;  
            $this->high = ($_GET['ipp'] == 'All') ? $this->items_total:($this->current_page * $this->items_per_page)-1;  
            $this->limit = ($_GET['ipp'] == 'All') ? "":" LIMIT $this->low,$this->items_per_page";  
        }  

        function display_items_per_page()  
        {  
            $items = '';  
            $ipp_array = array(10,25,50,100,'All');  
            foreach($ipp_array as $ipp_opt)    $items .= ($ipp_opt == $this->items_per_page) ? "<option selected value=\"$ipp_opt\">$ipp_opt</option>\n":"<option value=\"$ipp_opt\">$ipp_opt</option>\n";  
            return "<span class=\"paginate\">Items per page:</span><select class=\"paginate\" onchange=\"window.location='$_SERVER[PHP_SELF]?page=1&ipp='+this[this.selectedIndex].value;return false\">$items</select>\n";  
        }  

        function display_jump_menu()  
        {  
            for($i=1;$i<=$this->num_pages;$i++)  
            {  
                $option .= ($i==$this->current_page) ? "<option value=\"$i\" selected>$i</option>\n":"<option value=\"$i\">$i</option>\n";  
            }  
            return "<span class=\"paginate\">Page:</span><select class=\"paginate\" onchange=\"window.location='$_SERVER[PHP_SELF]?page='+this[this.selectedIndex].value+'&ipp=$this->items_per_page';return false\">$option</select>\n";  
        }  

        function display_pages()  
        {  
            return $this->return;  
        }  
    }  
    ?>  

http://net.tutsplus.com/tutorials/php/how-to-paginate-data-with-php/

祝你有美好的一天